Pinking machine



June 115, 11937. R. J. HEARNE 7 9 PINKING MACHINE Filed Sept. s, 1956 ATTORNEY.

Patented June 15, 1937 UNITED STATES PATENT OFFICE 6 Claims.

This invention relates to machines for pinking or punching a decorative pattern of scallops or ornamental holes along the margin or border of various kinds of cloth or other similar sheet material or fabrics for use on articles of apparel, upholstery, etc., including the edges of ribbons, fiounces and other trimmings, and the invention may be adapted to other machines.

Among the specific objects of the present invention, either individually or collectively, are

' the following:

The making of the work plate or table of the machine integral with the frame thereof, it being customary to attach a separate plate by means of screws which is a more or less expensive operation.

The making of the slot in the work plate in such way that it is open at one end, at the edge of the plate, so that the cuttings will not be drawn down by the cutter as is sometimes the case if a slot closed at the ends is used as in present types of machines.

The open slot in the work plate furthermore enables the pattern to be drawn easily from the mould when making castings, inasmuch as the casting is drawn away from the mould in a direction opposite to that at which the open ended slot opens out from the edge of work plate.

The provision of a plain anvil roller to yieldingly oppose the cutter, both being maintained parallel by such means as to compel the roller to always move in a rectilinear direction toward the cutter.

No gears are required by the present invention as would be the case if two parallel rotary shafts were employed.

The opposing anvil roller is mounted on a journal bearing carried by a fork or bifurcated member, which lends itself to economical construction, easy assembling and withdrawing of the fork and bearing for repairs without disturbing the cutter shaft.

These being among the preferred objects of the present invention, the same consists of certain features of construction and combinations of parts to be hereinafter described and then claimed with reference to the accompanying drawing illustrating a preferred embodiment of the invention and in which Fig. 1 is a top plan view of the machine, the operating handle being partly broken away and parts being shown in broken lines;

Fig. 2 is a broken and sectional plan of the machine on line 2-2, Fig. 4, parts being shown in broken lines;-

Fig. 3 is a sectional elevation of the machine as viewed in a direction looking towards the side faces of the cutter and anvil roller;

Fig. 4 is a broken elevation looking towards the edges of the cutter and the anvil roller, 5 Fig. 5 is a section on the line 5-5, Fig. 3,

viewed in the direction of the arrow, and

Fig. 6 is a section of the cutter and parts cooperating therewith.

In the drawing, the frame of the machine 10 comprises parts I!) of suitable construction formed preferably with a cubical part or block member II. A horizontal plate or table I2 is provided, one corner of which is formed by the upper surface of the enlarged part or block II, 15 that is the upper surface of block H lies in the same horizontal plane as the plane of the plate l2 so that such upper surface forms a continuation of the upper surface of the plate. A rotary shaft I3 is journalled in suitable bearings'of the frame parts Ill including the block or enlarged part l I and on which is fixedly mounted acrank 14 provided with a handle I5 for rotating the shaft l3 manually.

A cutter I6, preferably made of tool steel, is 5 fixed upon that end of the shaft l3 which extends beneath the work plate l2. This cutter may have a general circular contour, and is a plain cutter, or is patterned and formed so as to cut the desired pattern in the goods which 30 are to be pinked, although this cutter may, if desired, have an irregular contour. The hub of the cutter is fixed preferably on an extension of shaft 13 Which is somewhat larger than the reduced terminal part of theshaft l3 onto which 35 is screwed a nut [8 for tightening the cutter upon the shaft, as shown in Fig. 6. Collars I! are slipped on the shaft at opposite faces of the cutter. The Work plate or table I2 is provided with a transverse slot l9 which permits an upper 40 portion of the cutter IE to slightly protrude upwardly through it. This slot I9 is preferably closed only at its front end, the back end 2!] being opened out through the adjacent or off edge of the work plate 12. By making slot I9 45 open at its back end, the cuttings from the work will not be drawn down by the cutter.

In machines of the character to which the present invention relates, there has always been trouble caused by the cuttings from the work 50 getting tangled up in or by the Work plate. Attempts have been made to obviate this trouble, such as the use of a revolving brush to press against the cutter, the use of a stripper to strip off the materials from the cutter, and the dis- 55 pensing with the work plate entirely, which latter was a disadvantage. Under the preferred form of the present invention these defects are overcome by the simple expedient of forming the slot in the work plate open at its rear end 20, so that as the cuttings move along they cannot get caught or jammed because there is nothing to catch upon them. In other words, by making the slot in the plate open at its rear end the same results are obtained as if the machine were without a plate, but with the advantage of the plate.

The frame of the machine includes an upright tubular member or hollow cylinder 2| which is located directly above the cutter I 6. A spring actuated cylindrical follower or plunger 22 has a slight working movement in the hollow or bore of the tubular member 2|, it being made from suitable metal provided with downwardly extending parallel legs 23, the opposing surfaces of which are preferably flat. Between the opposing surfaces of the legs of the fork thus provided there is mounted an anvil roller 24 of suitable metal, the working plane thereof extending in the same plane as that of the cutter IS. The anvil roller 24 may have a smooth periphery and it opposes the cutter 16, being preferably journalled upon a shaft 24a which is screw threaded into one of the legs 23 of the fork. As is obvious the axes of shafts l3 and 24a are maintained in parallel relation.

The upper end of the plunger or follower 22 is provided with an axial boss or seat 25 which receives the lower coil of a helically coiled actuating or pressure spring 26 which is seated upon the upper end of the plunger or follower. The coiled spring 26 is received in the bore or hollow of the tubular member 2| and its tendency is to constantly press downwardly on the follower or plunger 22 and the parts carried thereby, so that the roller 24 may have a rolling contact with the cutter l6, and be rotated by the rotation of said cutter.

The spring 26 is confined and held in position by means of a threaded stem or shank 2! which has engagement with an internal screw thread 28 formed in the upper end of the tubular member 2|. A suitable thumb head or the like 29 is provided at the upper end of the stem 21, whereby the latter may be turned in one or the other direction to increase or decrease the tension of the spring 26, whose upper end is in bearing contact with the lower end of the stem 21.

The plunger or follower 22 is provided along one side with a longitudinal groove or channel 30, and there adjacent is a set-screw 3| screwed into a screw-threaded lateral hole in the tubular member 2 I, said screw 3i having a conical or tapered inner end 32 which may be caused to enter the groove or be removed therefrom by rotating the screw 3| by means of a wrench head 33 thereon. The fit between the tapered end of the screw 3| and the groove 30 should not be so snug as to prevent the plunger or follower 32 moving upwardly or downwardly as required. Tongue and groove means may be used in substitution to prevent the plunger or follower 32 and the parts carried thereby from turning around the axis of the plunger, and whether the same or the illustrated set-screw is employed for guiding the plunger, it is not necessary to remove the spline or the screw in order to insert the bearing member provided by the plunger 22 and the fork 23.

The frame ofthe machine is preferably provided with means for affixing the machine in using position, to which end a depending bracket 34 extends from a part of the frame, to one side of the block like enlargement l I, the lower end of the bracket having a lug 35. Into the lug 35 there is screwed a vertical screw-threaded shank 36 provided at its lower end with a button or knob 31 for turning the same, and the upper end of the shank 36 may be provided with a suitable disk 36. It will be noted that when the machine is clamped into position for use, the screw threaded shank 36 is directly below the block-like enlargement l I, thereby opposing this solid portion of the frame, along a line close to the plane of rotation of the cutter I6.

From the above description the operation of the machine and the manner of its use will be clear, and it is to be noted that if the cutter I6 is formed with an irregular contour, the anvil roller 24 will always be urged by the spring 26 to follow such contour, so that in all cases the goods will be cut in a clean cut fashion, whatever may be the shape of the edge of the cutter I6. It is preferable to cast all parts of the frame of the machine integrally, that is to say, all stationary parts, which parts need not again be specifically referred to as they will be obvious from the drawing and the present description.

It will be obvious to those skilled in the art that the details of the construction of the ma chine may be more or less modified without departing from the spirit of the invention as defined in the appended claims.

What I claim as new is- 1. In a pinking or similar machine, the combination with a frame and a work plate cast integral with each other, and the work plate having a slot, of a cutter having a rotary operating shaft journaled in the frame in a definite operating position, the cutter entering the slot, and rotary means above and cooperating with the cutter, whereby to cause the cutter to cut along the work fed thereto upon the work plate, such rotary means having its axis maintained parallel with the axis of the shaft.

2. In a pinking or similar machine, the combination with a frame and a work plate thereon, and the work plate having a slot which is open at its rear end through the back edge of the work plate, of a cutter having a rotary operating shaft journaled in the frame, the cutter entering the slot, and rotary means above and cooperating with the cutter, whereby to cause the cutter to out along the work fed thereto upon the work plate, the cutter and rotary means adapted to feed the work, which has been operated on thereby, over the open end of the slot, and such open end adapted to prevent the cuttings from the work from being caught or jammed by the plate.

3. In a pinking or similar machine, the combination with a frame, a horizontal work plate rigid with the frame and having a slot, of a cutter having a rotary operating shaft journaled in the frame, the cutter entering the slot and pro truding to engage the work supported on the work plate, of a hollow guide member rigid with the frame and extending upwardly above the cutter in alignment therewith, a plunger guided in the hollow of said member, an anvil roller journaled removably in the lower end of the plunger, the cutter and roller arranged to rotate in a common plane, means for maintaining the roller in such plane, such means positioned in the hollow of the guide-member, and an adjustable spring located in the hollow and confined therein at its upper end, and acting downwardly on the plunger to press the roller downwardly against the cutter for rotation thereby.

4. In a pinking or similar machine, the combination with a frame, a horizontal work plate rigid with the frame and having a slot, of a cutter having a rotary operating shaft journaled in the frame, the cutter entering the slot and pro truding to engage the work supported on the work plate, of a hollow guide member rigid with the frame and extending upwardly above the cutter, a plunger guided in the hollow of said member, and having a fork projecting below the guide member, an anvil roller positioned between the legs of the fork and removably mounted thereon for rotation, the plunger and its fork also removable from the guide member in a direction away from the work plate and cutter while the cutter and its shaft remain in position, and the cutter and roller arranged to rotate in a common plane, means for maintaining the roller in such plane, and an adjustable spring located in the hollow and confined therein at its upper end and acting downwardly on the plunger to press the roller downwardly against the cutter for rotation thereby.

5. In a pinking or similar machine, the combination with a frame, a horizontal work plate rigid with the frame and having a slot, of a cutter having a rotary operating shaft journalled in the frame, the cutter entering the slot, of a hollow guide member rigid with the frame and extending upwardly above the cutter, a plunger guided in the hollow of said member, and having a fork projecting below the guide member, an

anvil roller positioned between the legs of the fork and removably mounted thereon for rotation, the cutter and roller arranged to rotate in a common plane and maintained in such plane, a helical pressure spring located in such hollow and bearing downwardly on the plunger to press the roller against the cutter for rotation thereby, and an adjustable member screwed into the upper end of the guide member to confine the spring and change its tension, the adjustable member and spring being removable upwardly through the hollow, and the plunger and its fork also being removable upwardly therethrough when the anvil roller is detached therefrom.

6. In a pinking or similar machine, the combination with a frame, a horizontal work plate v rigid with the frame and having a slot, of a cutter having a rotary operating shaft journaled in the frame, the cutter entering the slot, of a hollow guide member rigid with the frame and extending upwardly above the cutter, a plunger guided in the hollow of said member, an anvil roller journaled removably in the lower end of the plunger, the cutter and roller arranged to rotate in a common plane, an adjustable spring located in the hollow and acting downwardly on the plunger to press the roller against the cutter for rotation thereby, and means for maintain.- ing the roller in said common plane, the plunger being removable upwardly through the hollow when the anvil roller is detached therefrom and without disturbing such maintaining means or the cutter shaft.

ROBERT J. HEARNE. 

